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5 Cards in this Set
- Front
- Back
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What is a polymer? |
A polymer is made from a monomer that is an alkene. The double bond opens to join up with new monomers to make a long chain molecule called a polymer. |
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Why is it important to recycle polymers? |
They are made from crude oil which is non renewable |
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What are biodegradable plastics? |
Plastics that break down easily. Corn starch is built into the plastics. Microorganisms feed on the corn starch which breaks the plastic down. |
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Name and describe 3 smart polymers |
Light sensitive polymers: Top layer of plaster peeled back. Lower layer nw exposed to light. Adhesive loses stickiness. Peels easily off the skin.
Hydrogels: Have cross linking chains that trap water. Act as wound dressings. Led body heal. Good for burns.
Shape memory: Wound is stitched loosely. Temp of the body makes the thread tighten. Closes the wound up. |
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